$Gamma: Difference between revisions

From m204wiki
Jump to navigation Jump to search
(Created page with " <span class="pageSubtitle">Gamma function</span> <p class="warning">Most Sirius $functions have been deprecated in favor of Object Oriented methods. There is currently no direct...")
 
m (1 revision: from DME w/ love)
(No difference)

Revision as of 20:57, 4 January 2012

Gamma function

Most Sirius $functions have been deprecated in favor of Object Oriented methods. There is currently no direct OO equivalent for the $Gamma function.

The $Gamma function returns the value:

hp0 font=chapn.
  • &'sub(&infin.)
    &'sub(0)&int. u&'sup( x-1) e&'sup( - u) du
ehp0.

Syntax

%num = $Gamma(x)

If x is not within the range 0 < x < 57.5744, an error message is printed and a 0 is returned.

See the SIRFUNC EXEC parameter for an explanation of when this high-performance, high-precision version of the IBM mathematical function from the Sirius Mods is used, as opposed to the version of the $function in the Model 204 FUND or FUNDLE CSECT.